; I, ‘The purposeof thie supplescat is to analyze in greater detailthe fade
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air readings obtained OY,the(Ate Fores.ds
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II, During‘Operation,BOSTER/TANGLE (a),the sirForceSpecialYFeapone Céater,ne,
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collected radiosetive fall-out deta from ‘the air to a dis tance of“approxiiately
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150 ailes downwind, "Since the air monitor's logs ‘shea the gemna rey reading, :
the tise, the altitude and grid location of the cireraft, it is possible to oo
extrepolate the gaane ray. readings taken in an airpleae to.a._Fesding 3 ft above °
the ground. ' BY this nethod the fall-out has been plotted, ia Figure |le in.
terzs of infinity dose inroentgens essuning a decay rete of t
vi.2 Figure .
le gives only the: fall-out,deyond 10 ailes of ground 28I0.
The fall-out.
within 4 ailes of ground ‘aera has ‘deen ‘studied ‘in great detail, and itappears
ss
that nL 5% of the total boab activity rae deposited ieneiiately downwind with
ot!
in 3.23 square ailes. | Thedowanind fall-outBeyond 20 niles froa ground ‘zero :
indicates that spproxinately oott 20% of ‘the ‘totaldoab setivity was deposited
on the grow. “This means ‘that approxizatelya total of 70h‘t 208 of the
me
residual activity of the |Jaiche -* Surface bomb fell-out dosnmind,
Aa
speetion
a
6
of. Figure le shows thet there, ts a ‘saxtaua fall-out Aznediately dosind, ve
hd
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oe
ae
wt
2
=
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as
is a “third ‘nexioum at a alstenes ‘of 65 niles iE of“thetakget gree.” Arind
vector ‘plot shors that. the second caxinna vas due to fall-‘out. fron’approxi.
’
\ '
“
ok,
x gee!
there, is‘a second‘aaxdeus ‘approciastely,20.niles.ioe,of“gouna’ zero‘and thers>
mately the 9000 ft asi level, of the cloud, and the, third pextoua as doa, to.- oS
fall-out ‘fron 13,000 tt asl,
a
er Ror r
o
+S
The minimis between, thése two, axis saedus"to. we
fall-out from 10, 0°0 ft asl. Keeping these things a and the folle stng”
quotation is rade fron Page 71 of the ArSviP ReportonProject7 ts "Posnsport